Bake the gratin in the preheated oven for 10 minutes, or until the cheese is melted and bubbly.
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Once the gratin is cooked, remove it from the oven and garnish with freshly chopped parsley.
Serve the langoustine and shrimp gratin hot, with a side of crusty bread or a light salad for a complete and elegant meal.
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I hope you enjoy making and sharing this delicious langoustine and shrimp gratin with your loved ones. Bon appétit!
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